an environment that the europeans, by the way, are way ahead of us on. a lot more surveillance in europe than there is here. i suspect over the course of a month or two or three months americans will step back and say, hey, that might have aided that investigation but we're not sure we want to live in that kind of security culture. >> and we can't draw, phil, any hard conclusions about one of these bombs was in a pressure cooker. that's obviously available very easily. you can't draw any conclusions whether that's a signature of a domestic or a foreign terrorist. >> actually, i would draw conclusions. but more about what it's not than what it is. when you look at the people i faced for a couple decades, that is terrorists inspired by al qaeda, they after 9/11 went to bombs that were much more sophisticated. explosives were more sophisticated. they received training that was pretty advanced. they selected targets that were harder than this target. i would argue more iconic. that is transportation targets that are recognizable worldwide. in this case you'v